D16Z6 turbo

[Jorelinio]

Hello,
I have Civic D16Z6 could you tell me what HP i should expect for this car wiht thease parts under my engine:I strive for 250-280hp but how much Psi is necessary to do this??
I have:
-Nippon racing pistons 8,8:1 whith head gasket with low compression to 8,5:1
-SRM H-beam rods
-T3 .42.48 turbo kit
-440cc injectors
-255lbs fuel pump
-Block Guard
-Ngk iridium spark plugs
If i need something else tell me your advices
Thanks

[ChrisCantSkate]

tuning

[thermal]

Open up the head and th exhaust. Do a little bit of porting on the head and a minimum of 2.5 inch diameter exhaust pipe. That compression is too low for me. Yes you can squeeze more boost but it really doesnt mean "power" all the time. The turbo is quite small. Get a T3T04 with a .48 /54. Get an electronic fuel management. Hondata or Crome at least. I've never heard of NGK iridium... I've heard of Denso Iridium but stay away from that and stick with an NGK 7 series like the ZRF7-11. As mentioned, dyno tune that set-up.........

[JDMFantasy2k]

That compression is stupid low, no need for that. 9:1 should be fine, i'd personally retain stock compression but that's just me.

Yeah a .42/.48 is a burnout turbo, it'll definately run out of breath up top. Thermal's suggestion is pretty good. You could probably get away with a .60/.48 with a super 60 wheel, which should be responsive all around, not sure if it'll flow up to 280 though....

Tune with crome. I swear by it, it's easy to use and very powerful. Plus, it's FREE!!

[Sivik]

i'd also suggest changing the 440's to 550's just to be safe and sure... gives you more flexibility with tuning and you won't be maxing out the injector duty cycle.

9:1 compression, bigger turbo (t3/T4 50 trim), tuning = 250 no problem...

PSI is no relative to HP due to the fact that turbo's are different and so are engines. Ideally the common rule of thumb is 10 hp per 1 psi, but with more efficient turbos and better tuning methods nowadays, that really goes out the window.

Blockguard isn't really necessary, plus I hear that have some cooling problems. Don't know for sure on that one.

While your at it, replace the timing belt and use ARP headstuds and rod bolts. Again, better safe than sorry.

[Jorelinio]

While your at it, replace the timing belt and use ARP headstuds and rod bolts. Again, better safe than sorry.

That is interesting for (ARP). I am thinking..... is this necessary to put ARP bolts??? whats the problem to be with stock.One of my friends drive Honda civic VTI with T3/T4 on 1 -1.5bar and he is with stock bolts and dont have any problems car is around 250hp.

[thermal]

It is doable with OEM head studs.... but why take the chance?

[JDMFantasy2k]

Originally posted by Sivik


PSI is no relative to HP due to the fact that turbo's are different and so are engines. Ideally the common rule of thumb is 10 hp per 1 psi, but with more efficient turbos and better tuning methods nowadays, that really goes out the window.

Blockguard isn't really necessary, plus I hear that have some cooling problems. Don't know for sure on that one.

1 PSI= 10 HP give or take 2 based on tuning and it usually is only correct on lightly boosted motors (ie: basically stock with an average size turbo)

Blockguards can be safe if installed properly, which, most people do not do. I can't see how it could cause a cooling problem compared to filling the block

[Sivik]

i stretched my headstuds at 10 psi...

the last thing you want to do is have to replace your headstuds after you build the motor... so its better to do while your rebuilding.